Integrated IS-IS <第10回> 異なるエリアのCiscoコンフィグ設定

Integrated IS-IS <第10回> 異なるエリアのCiscoコンフィグ設定

Integrated IS-IS:異なるエリア間のコンフィグ設定

routingis14

R1(config)# router isis
R1(config-router)# net 49.0001.1111.1111.0001.00

R1(config)# interface GigabitEthernet0/0
R1(config-if)# ip address 10.0.0.1 255.255.255.0
R1(config-if)# ip router isis
R1(config-if)# isis circuit-type level-2-only

R1(config)# interface GigabitEthernet0/1
R1(config-if)# ip address 10.1.1.254 255.255.255.0
R1(config-if)# ip router isis

R2(config)# router isis
R2(config-router)# net 49.0002.1111.1111.0002.00

R2(config)# interface GigabitEthernet0/0
R2(config-if)# ip address 10.0.0.2 255.255.255.0
R2(config-if)# ip router isis
R2(config-if)# isis circuit-type level-2-only

R2(config)# interface GigabitEthernet0/1
R2(config-if)# ip address 10.1.2.254 255.255.255.0
R2(config-if)# ip router isis

R3とR4では完全なレベル1ルータなので「 is-type level-1 」を設定します。

Integrated IS-IS:ステータス確認(R1)

以下で表示されるステータスは、R3とR4は接続していない時のステータスです。

R1# show clns protocol

IS-IS Router: <Null Tag>
System Id: 1111.1111.0001.00  IS-Type: level-1-2
Manual area address(es):
49.0001
Routing for area address(es):
49.0001
Interfaces supported by IS-IS:
GigabitEthernet0/1 – IP
GigabitEthernet0/0 – IP
Redistribute:
static (on by default)
Distance for L2 CLNS routes: 110
RRR level: none
Generate narrow metrics: level-1-2
Accept narrow metrics:   level-1-2
Generate wide metrics:   none
Accept wide metrics:     none

R1# show clns neighbors
System Id      Interface    SNPA                    State  Holdtime  Type  Protocol
R2                 Gi0/0         1234.5678.90ab      Up    26            L2     IS-IS

R1# show isis topology

IS-IS TID 0 paths to level-1 routers
System Id         Metric     Next-Hop          Interface   SNPA
R1                     —

IS-IS TID 0 paths to level-2 routers
System Id         Metric     Next-Hop           Interface   SNPA
R1                     —
R2                    10          R2                      Gi0/0       1234.5678.90ab

R1# show ip route

Gateway of last resort is not set

10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
C        10.0.0.0/24 is directly connected, GigabitEthernet0/0
L        10.0.0.1/32 is directly connected, GigabitEthernet0/0
C        10.1.1.0/24 is directly connected, GigabitEthernet0/1
L        10.1.1.254/32 is directly connected, GigabitEthernet0/1
i L2     10.1.2.0/24 [115/20] via 10.0.0.2, 00:08:03, GigabitEthernet0/0

Integrated IS-IS:ステータス確認(R2)

R2# show clns protocol

IS-IS Router: <Null Tag>
System Id: 1111.1111.0002.00  IS-Type: level-1-2
Manual area address(es):
49.0002
Routing for area address(es):
49.0002
Interfaces supported by IS-IS:
GigabitEthernet0/1 – IP
GigabitEthernet0/0 – IP
Redistribute:
static (on by default)
Distance for L2 CLNS routes: 110
RRR level: none
Generate narrow metrics: level-1-2
Accept narrow metrics:   level-1-2
Generate wide metrics:   none
Accept wide metrics:     none

R2# show clns neighbors
System Id      Interface    SNPA                    State   Holdtime  Type  Protocol
R1                 Gi0/0         9876.5432.10ab      Up         8          L2     IS-IS

R2# show isis topology

IS-IS TID 0 paths to level-1 routers
System Id            Metric     Next-Hop             Interface   SNPA
R2                        —

IS-IS TID 0 paths to level-2 routers
System Id            Metric     Next-Hop             Interface    SNPA
R1                       10          R1                       Gi0/0         9876.5432.10ab
R2                        —

R2# show ip route

10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
C        10.0.0.0/24 is directly connected, GigabitEthernet0/0
L        10.0.0.2/32 is directly connected, GigabitEthernet0/0
i L2     10.1.1.0/24 [115/20] via 10.0.0.1, 00:11:49, GigabitEthernet0/0
C        10.1.2.0/24 is directly connected, GigabitEthernet0/1
L        10.1.2.254/32 is directly connected, GigabitEthernet0/1

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